Grain-door.



W. WALKER.

GRAIN DOOR.

APPLICATION FILED MAY 23. I915. 1 1% mm; Patented June 20,1916. 9 9 3 SHEETS-SHEET l N VE N TOR.

W. WALKER.

GRAIN DOOR.

Patented June 2(1 1916.

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GRAIN DOOR- APPLICATION FILED MAY 28. 1915.

Patented June 20, 1916.

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t' errata 'WHJLWM WMWE, 0F SJEJDALIA, MTSSOURI, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, @F ONE-THIRD T0 SVJEN P. ALQUIS'JL, OF SEDALIA, MISSOURI,

AND ONE-THEM T0 WILLIW L. KELLOGG, 0F

reasons, KANSAS.

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Specification of Letters Patent. Patented {111' me 2Q, 11916.

Application filed May 28, 1915. Serial Ito. 31,01fi.

To all whom it may concern Be it known that 1, WILLIAM WALKER, a citizen of the Dominion of Canada, residing at Sedalia, in the county of Pettis and State of Missouri, have invented certain new and useful Improvements in Grain-Doors, of

which the following is a specification.

My invention relates to a sheet metal grain door for railway box cars. 2

One of the principal objects of the. invention is to provide a grain door of this type which will be strong, inexpensive to manufacture, light in weight, and compact in its construction so that it will take up but little I space in the car.

A further object is to provide certain novel and improved means for mounting the door within the car whereby it may be readily put in position across the door opening, when the car is to be loaded with grain, in such manner'as to effectually prevent any leakage, and moved away from the door opening against the side wall of the car, so

as to be entirely out of the way, when the car is used for other kinds of freight.

My invention contemplates a grain door I of the sort provided with a small relief door orslide which may be opened to allow the discharge 'of a certain amount of grain in order that the ressure against the door may be relieved su cient to allow the door as a whole to be moved away from the door opening; and in this connection the invention consists in certain improvements in the con-- struction of the main door and of the relief or sub-door whereb the latter may be readily manipulated and w ereby the door structure as a-whole will be compact, simple in its construction and little liable to become in j ured or get out of order with continued use.

The invention has for further objects such other new and improved constructions, arrangements and devices relating to grain doors for railway cars as will be hereinafter described and claimed.

The invention is illustrated in the accompanying drawings in a preferred embodiment, this embodiment being susceptible of modifications in certain respects, as will be apparent to those skilled in the art.

Figure 1 is a fragmentary vertical, longitudinal section taken through a box car of ordinary construction showing the grain door of my invention in position across the position, that is, when the door is slid away from the door opening against the side wall of the car.

The detail views of Figs. 2 to 6 are all on v a scale somewhat larger than. that of Fig. 1.

Like characters of reference designate like parts in the several figures of the drawings.

The box car in connection with which the grain door of my invention is illustrated in thedrawings, is a wood boxcar of standard type. The floor of the car is indicated at 10, the roof at 11, the sheathing at 12 and the inner lining at 13. The side wall of the car is provided with the usual door opening 14 which may be closed by any suitable door, such, for example, as the sliding outside door 15. The grain door of my invention is arranged within the side wall of the car and in closed position bears. against the door posts 16, 17. The main door consists preferably of a sheet metal structure 18 pressed to a dished configuration and formed with an upper marginal flange 19, a lower marginal flange 20, and a flange 21 at its forward edge. The upper marginal flange 19 enters a channel-shaped guide 22 secured to the side wall of the car rearwardly of the door opening. A guide is also provided for the lower flange 20 consisting preferably of an angle iron 23 secured to the floor 10 of the car, the vertical leg of which lies close to the inner lining 13. When the door is closed across the door opening 14; the flange 21 on the forward edge enters a channelshaped keeper 24 on the door post 16. The

- flush with the lining 13 is a housin 27 held.

to the belt rail 28 by a bolt 29 Fig. 5). Fivotally mounted within the housing is a staple 30 which may be turned on its pivot I stud 31 so that it will project out of the housing in position to be engaged by a slotted hasp 32 hinged at 33 to the door 18 and by a hook 34 pivoted to the hasp. By this device the door is held in closed position. A similar housing 27 is set into the side wall of the car at such distance from the door opening that thehaspand hook'on the door' may be engaged with the pivoted staple 32 when the door'is moved through guides 22,.

23 to a position entirely away from the door opening. The housing 27 is shown (Fig. 6) as set into one of the uprights 35 of the car framing. Preferably ametal threshold strip 36 is laid across the floor at the'door opening against which the flange 20 on the door bears when the door is in closed position.

.The main door is preferably dished inwardly of the car as shown. It isformed with an opening37. The relief door 38 which closes this openhig is composed preferably of a piece of sheet metal which is pressed to a dish-shaped configuration and is arranged within the dished portion'of the main door. The relief door is provided with flanges 39, 40 on its upper and lower edges which extend into guides 41, 42 riveted to the outer face of the main door. The forward edge of the relief door has a fiat marginal flange 43 which bears against the outer surface of the main door, when the small door is closed; and the rear edge of the small door is provided with a reversely bent flange 44 which has'an interlocking relation the car which make the car absolutely graintight at these places. The fact that the door is dished inwardly gives it very considerable strength to withstand the thrust of the load.

The relief door has a grain-tight connection with the maindoor. -Atthe same'timeit may be very easily slid away from the openin the latter so} as to relieve the pressure.

1n su%ciently topermitz the .main door 'to be moved away from thefdooropening." The; relief door, its guides,' ;;and the .means .employed for holding the door in closed posi-q' tion are arranged wholly within the dished; portion of the main door SQ'aS to be entirely out of the way when .the main door is opened, while at the same 'time'these parts are accessible from the outside of the car after the outside door 15 has been 0 ened. The main door it will be seen, is locke from within so that it cannot be opened by an un-' main door.

authorized person. The relief door is rotected from being tampered with by sea g the hasp 46 to staple 48. When enough opening in the main door to relieve the pressure against the latter, the door may be readily moved backwardly'in guides 22, 23 so that the whole of the door opening in the side of the car will be available for discharging the bulk of the cargo. The door slides over the fastening device 27, 30, the staple of which lies wholly within the housing 27 when released by the hook34 and hasp 32. When the grain door is not in use'it lies close up against the inside wall of the car so as to take up very little room and, furthermore, so as to be entirely outof the way and not likely to be injured by the lading of the car.

While I have described my invention in certain preferred embodiments it will be understood that modifications might be made without departure from the principles of the invention. Therefore I do not wish to be understood as limiting the invention to the particular constructions, arrangements and devices shown and described except so far as the claims are specifically so limited.

I claim:

1. A car having a door opening, in combination witha grain door of sheet metal, the

center portion of which is pressed to a dished configuration with the dished part projecting into the interior of the car and with the marginal portion surrounding the central dished portion. forming flanges, guiding means to receivesaid marginal flanges arranged on the inside of the car adjacent said opening, in which guiding means the door may be slid back and forth across the door opening, said dished portion of the main door being formed with an opening, and a sub-door to close said opening which is located within'the vertical planes defining the maindoorm'.

2 A car having a door opening, in combination witha grain door structure comprising a main door of sheet metal, the center portion of which is pressed to a dished con figuration withithe dished part projecting into the interiorof the car and with the margmal portion surroundingthecentral dished portlon formingijvertical. flanges, guiding means to receive said marginal flanges arranged on'the inside fofthe -car adj acent said opening, in which guiding means the door may-be slid back and forth across thedoor opening, said dished portion. of the maindoor being formed with. an opening and a sub-door to close said openin'gwhich is located within the vertical planes defining the 3 A car having a door combi natlon'with a grain door structure comprising a..mam door of sheet "metal, the center grain has been discharged through the door nieaiao portion of which is pressed to a dishedsconfiguration with the dished part projecting into the interior of the car and with the marginal portion surrounding the central dished portion forming vertical flanges, guiding means to receive said marginal flanges arranged on the inside of the car adjacent said opening, in which guiding means the door may be slid backand forth across the door opening, said dished portion of the main door being formed with an opening, and an oppositely dished sheet metal sub-door to.

close said opening located within the vertical planes defining the main door.

4. A car having a door opening, in combination with a grain door structure comprising a main door of sheet metal, the center portion of which is pressed to a dished configuration with the dished part projecting into the interior of the car and with the marginal portion surrounding the central dished portion forming vertical flanges, guiding means to receive said marginal flanges arranged on the inside of the car adjacent said opening, in which guiding means the door may be-slid back and forth across the door opening, said dished portion of the main door being formed with an opening, guides on opposite sides of said opening and within the dishedportion of the door, and an oppositely dished sub-door located within the vertical planesdefining themain door formed with marginal flanges slidable in said guides.

5. A grain door structure comprising a main sheet metal door, the center portion of which is pressed to a dished configuration with the marginal portion surrounding the central dished portion forming flanges lying in the same plane so that they may bear fiat- Wise against the door frame of the car, the dished portion of said main door being formed with an opening, and a sub-door to close said opening which lies within the dished portion of the main door.

6. A grain door structure comprising a main sheet metal door, the center portion of which is pressed to a dished configuration with the marginal portion surrounding the central dished portion forming flanges lying in the same plane so that they may bear flatwise against the door frame of the car, the dished portion of said main door being formed With an opening, guides on opposite sides of said opening Within the dished portion of the main door, dished sub-door located within the vertical planes defining the main 'door having flanges slidable within said guides.

WILLIAM WALKER.

Witnesses:

SVEN PETER Anoo s'r, 1E. 1F. DURHAM.

and an oppositely 

